Shimano 105 ST R7120 12 Speed Shifter Size:Left strongest and most secure smartphone Apollo strongest and most secure smartphone bike mount on the market Rider tuned gear steps and smooth 2 way shifting FeaturesMechanical 12 speed dual control lever with updated ergonomicsLight shifting operation lets you focus on the road aheadNew blade shape creates shorter lever access curve allowing riders with a wide range of hand sizes and shapes to comfortably reach their leversSpecifcicationsBrake lever Hose joint: StraightBrake lever Recommended brake caliper: BR R7170Brake lever Oil: SHIMANO Mineral New lever design brings better control to a wider variety of ridersThe SHIMANO 105 R7120 DUAL CONTROL LEVERS feature a revised lever position and bracket shape developed using data from a broad study of different hand shapes